The Man of Blue Circles. Fred Vargas

In Paris, circles drawn with blue chalk appear at night, with strange trinkets left in the center. Jean-Baptiste Adamsberg, an intuitive and unconventional investigator, is the only one who senses that behind this "innocent" prankster lies cruelty. When a woman's body is found in one of the circles, it becomes clear — the killer is just starting the game. A surreal, witty, and suspenseful crime novel.